Blue Diamond Heating & Air
About Blue Diamond Heating & Air
Blue Diamond Heating & Air provides HVAC service for homes and businesses in San Diego and surrounding areas. Its work includes air conditioning repair and installation, heating repair and installation, air duct repair, indoor air quality service, ductless mini-splits, and heat pump installation. The company offers online booking and financing. For new cooling systems, it provides free estimates and consultations, with technicians helping customers select equipment based on their needs and energy-efficiency goals. Blue Diamond also describes trained and certified technicians and service guarantees covering workmanship, property protection, system sizing, comfort, and overtime charges. Repair services address cooling problems such as leaks, frozen coils, unusual noise, odors, and thermostat issues.
At a glance
- Trades
- HVAC
- Service area
- San Diego, San Diego County
- Address
- 405 Vernon Way, El Cajon, CA 92020
- Highlights
- Financing available
Services
- AC repair
- AC installation
- Air duct repair
- Indoor air quality
- Heating repair
- Heating installation
- Ductless mini-splits
- Heat pump installation
How the 83 score breaks down
Scores are calculated the same way for every company. See the method.
What customers say
Blue Diamond is a wonderful friendly company to work with. The technicians and office staff are always friendly and helpful.
Google review, Oct 30, 2026
I have been treated very well from beginning to end. If i have to add to the system, i will definitely call Blue Diamond again. I had an idea of what I wanted. Lars and CJ evaluated my home, looked at my current system, and drafted multiple proposals/designs from me to choose. They also offered multiple financing op…
Google review, Oct 29, 2026
Read all 925 reviews on GoogleWe had a great experience with Blue Diamond Heating & Air. We had our old furnace/air conditioner break down. This company serviced the unit for the previous owners so we decided to use them. Their team was amazing. They were very conscientious & skilled at HVAC & ductwork replacement. We highly recommend this…
Google review, Oct 24, 2026
Rating distribution and reviews from the company's public Google listing.
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